The research aims to study the effects of the climatic elements, rain, dry heat and drought on wheat and barley production (irrigated and rain-fed) in al-Hasakah station in the Eastern Province, In order to achieve the objectives of the research a series of pen'ds of time extending from 2001 to 2010, was adopted Based on the indexes, rates growth and multiple regression the most important results were as the Following, relation: 1- There is a very strong and statistically significant between the irrigated wheat production and rainfall, dry heat and drought index, wch was the most influential, effed followed by precipitation drought index, and by dry heat. 2- There is no statistically significant relationship between rain-Fed wheat production and rainfall dry heat or drought index. 3- There is a strong and statistically significant relationship between the production of irrigated barley and rainfall, dry heat and drought index, The most influential effed was drought index, followed by dry heat, and precipitation. 4- There is no statistically significant relationship between the production of rain-Fed barley and rainfall and dry heat or drought index.